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Finding the Fourth Proportional to 629,856, 869,235.84 and 361,601.28

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Solution

The fourth proportional to 629,856, 869,235.84 and 361,601.28 is: 499,029.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856 : 869,235.84 = 361,601.28 : x
  2. Step 2: Convert to fraction form
    629,856/869,235.84 = 361,601.28/x
  3. Step 3: Cross multiply
    629,856x = 869,235.84 × 361,601.28
  4. Step 4: Simplify right side
    629,856x = 314,316,792,365.88
  5. Step 5: Solve for x
    x = 314,316,792,365.88/629,856
  6. Step 6: Final answer
    x = 499,029.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.